| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | whether [verb] | 1963 |
|
| 2 | [conj] used | 1154 |
|
| 3 | [subord] used | 564 |
|
| 4 | whether [vb pp] | 271 |
|
| 5 | whether use | 50 |
|
| 6 | whether used | 5 |
|
